I don’t think it’s abnormal not to be sad about his death. Not at all. It’s actually better for everyone that he can’t hurt anyone anymore. Unfortunately, he left a bunch of kids, some of whom will probably have the brain deformity AND the trauma that some of the worst of them do.

I have the opposite problem, of still loving the person who treated me so cruelly and then died a year ago. I’m still getting the fallout from people she poisoned against me, including former clients and friends, but she did nothing anywhere near to what your ex-partner did.